# -*- coding: utf-8 -*-

import argparse

def parser():

ap = argparse.ArgumentParser()

ap.add_argument("-a", "--a", required=True, help="边a的边长")

ap.add_argument("-b", "--b", required=True, help="边b的边长")

ap.add_argument("-c", "--c", required=True, help="边c的边长")

return ap.parse_args()

def main():

opt = parser()

a = float(opt.a)

b = float(opt.a)

c = float(opt.a)

if a+b>c and a+c>b and b+c>a:

print ("a=%s, b=%s, c=%s 可以构成三角形" % (a, b, c))

if a == b == c:

print ("a=%s, b=%s, c=%s 构成等边三角形" % (a, b, c))

elif a == b or b == c or a == c:

print ("a=%s, b=%s, c=%s 构成等腰三角形" % (a, b, c))

if max([a, b, c]) ** 2 == min([a, b, c]) ** 2 * 2:

print ("a=%s, b=%s, c=%s 构成直角三角形" % (a, b, c))

elif max([a, b, c]) ** 2 > min([a, b, c]) ** 2 * 2:

print ("a=%s, b=%s, c=%s 构成钝角三角形" % (a, b, c))

elif max([a, b, c]) ** 2 < min([a, b, c]) ** 2 * 2:

print ("a=%s, b=%s, c=%s 构成锐角三角形" % (a, b, c))

else:

max_v = max([a, b, c])

min_v = min([a, b, c])

mid_v = list(set([a,b,c])-set([max(a,b,c),min([a,b,c])]))[0]

if max_v**2 == min_v**2 + mid_v**2:

print ("a=%s, b=%s, c=%s 构成直角三角形" % (a, b, c))

elif max_v**2 > min_v**2 + mid_v**2:

print ("a=%s, b=%s, c=%s 构成钝角三角形" % (a, b, c))

else:

print ("a=%s, b=%s, c=%s 构成锐角三角形" % (a, b, c))

else:

print ("a=%s, b=%s, c=%s 不可以构成三角形" % (a, b, c))

return

if __name__ == '__main__':

main()